Repairing-patch and repairing material for pneumatic tires.



F. WOODG-ATBS n T. W. JURDAN. REPAIRING PATGH AND RBPARING MATERIAL FOB. PNEUMATIG TIRES.

AIPLIATION PILED DEO.17,1908.

'Patented June 18, 1911.

ffe'essesx FREDERIGK WOGIDGATS ANI? THOMAS WALTER JOURJDAN,' 0T' TIVERTN, ENGLAN?.

EPAIEING-TATCH AND REPAIRING MATERIAL FOR TNEUMTl-C TIRES.

Specircation ot Letters Patent. Patented Time 13, TQT.

application mea December 17, 1908. sensing. 468,088. l

To all whom 'it may concern:

Be it known that we, .Fnaonmox Wooir' GATES, residin at Mont View, Tiverton, and THOMAS e ALTER JOURDAN, residing at Alsia Brook, Tiverton, both in the countyV of Devon, in that part of the United Kingdom called England, subjects of His Majestythe King of the ,United Kingdom of Great Britain and Ireland, have invented new 4and useful Improvements `in Repairing- Patches and Repauing Material for Pneumatic Tires and the Like, of which the fol.- lowing is a specification. This invention relates to improvements in repairing patches for pneumatic tires and4 the like.

Re 'airing patches for pneumatic tires and the like nsually consist of. a plurality of layers of rubber or a certain kind of fabric adapted to be cemented to the tire and to close a slot, puncture or any damaging open ingtherein. A

An object of this `invention is`to provide layers, the surfaces of said layers being' so constructed that la separation of these layers by frictional heat er some other reason can not easily occur. y In the drawing z-F' re l' is a perspeo tive view. of one part othe patch. Fig. v2 vis a top plan view o an embo iment of this invention. Fi 3 is a side elevation of the same. Fig. e, 1ig. 5 and Fig.. '6 are various modications respectively of another part of i the t atcb.

Ir. improved two elements. o,

patch 'main'ly consists of 411g. l, 'designates a thin sheet of soft rubber ada ted to be cui; in any desired4 shape. The ot er sheet consists ci vulcanized rubber and preferably is somewhat thicker than 'the soft rubber sheet. This sheet of vulcanized rubber is provided on one of its surfaces with projections, as

shown in Figs. 4 and 5, or grooves are provided thereon as indicated 1n Fig. 6. The

two parts forming the patch are united by means of a'cold vulcenizing lnid, the prio.- jections of the slieet vulcanized rubber extending into the bod ci the soft rubber sheet, or said soft rub r sheet projecting into the grooves and formed on the surface ofthe vulcanized sheet. These projections or grooves rmay have any desired size or shape and it will be understood that the invent-ion is not limited to the form shown 4in parts b, c, and al, respectively. By this partial mutual penetration of the two members forming'the patch, a very rm amalgamation is obtained and the entire patch is then secured to the inside of the tire by means `of cement or by some other suitable means. A plug e may be secured to the sheet of soft rubber and extends through the uncture for hole in the tire, thereby obtaining a more perfect closure of these openings.

We claimtl l. A re airing patch for pneumatic tires and thelike comprisin in combination e .thin sheet of soft unvn canized rubber and a sheet of vulcanized rubber provided With a roughened'surface, said thin sheet lying ,a ainst the roughened surface and being a hered thereto by means of a cold vulcaniw ing fluid.

2. A patch for lpneumatic tires and the like comprising in combination, a thin sheet of soft unvulcanized rubber and e. thicker sheet of vulcanized rubber, said last 'named sheet being provided with icrojecting por-- tions on one side, said thin sheet lying aainst said projecting portions and being 

